PHP connection to a database (no output!) - php

Question

I wrote a code to connect a html page to the database, but it does not search for all employees in the table. I'm not sure why the code seems to be correct. It does not give any error or warning.
Can anyone explain to me what is wrong?
<div>
<form id='searchform' action='index.php' method='get'>
<a href='index.php'>All employees</a> ---
Search by a last name:
<input id='search' name='search' type='text' size='20' value='<?php echo #$_GET['search']; ?>' />
<input id='submit' type='submit' value='Go!' />
</form>
</div>
<?php
// check if search view of list view
if (isset($_GET['search'])) {
$sql = "SELECT * FROM Employee WHERE LastName like '%" . #$_GET['search'] . "%'";
} else {
$sql = "SELECT * FROM Employee";
}
// execute sql statement
$stmt = oci_parse($conn, $sql);
oci_execute($stmt);
?>
<table style='border: 1px solid #DDDDDD'>
<thead>
<tr>
<th>Personal Number</th>
<th>Insurance Number</th>
<th>First Name</th>
<th>Last Name</th>
<th>Birth Date</th>
<th>Gender</th>
<th>Hire Date</th>
<th>Salary</th>
<th>Office ID</th>
</tr>
</thead>
<tbody>
<?php
// fetch rows of the executed sql query
while ($row = oci_fetch_assoc($stmt)) {
echo "<tr>";
echo "<td>" . $row['PersonalNumber'] . "</td>";
echo "<td>" . $row['InsuranceNumber'] . "</td>";
echo "<td>" . $row['FirstName'] . " " . $row['LastName'] . "</td>";
echo "<td>born on " . $row['BirthDate'] . "</td>";
echo "<td>" . $row['Gender'] . "</td>";
echo "<td>hired on " . $row['HireDate'] . "</td>";
echo "<td>" . $row['Salary'] . "</td>";
echo "<td>" . $row['OfficeID'] . "</td>";
echo "</tr>";
}
?>
</tbody>
</table>
<div>There are found <?php echo oci_num_rows($stmt); ?> employees!</div>
<?php oci_free_statement($stmt); ?>
</body>